Answer:
The increased price must be decreased by 28.57%
[tex]28.57\text{ \%}[/tex]Explanation:
Given that the price of pulses has increased by 40%.
Let x reprsent the initial price.
and f the increased price;
[tex]\begin{gathered} f=x+40\text{\% of x} \\ f=x+0.4x \\ f=1.4x \end{gathered}[/tex]To bring the price back to x we want to calculate the percentage decrease;
[tex]\begin{gathered} P=\frac{f-x}{f}\times100\text{ \%} \\ P=\frac{1.4x-x}{1.4x}\times100\text{ \%} \\ P=\frac{0.4x}{1.4x}\times100\text{ \%} \\ P=28.57\text{ \%} \end{gathered}[/tex]Therefore, the increased price must be decreased by 28.57%
[tex]28.57\text{ \%}[/tex]